Malware Analysis Report

2025-01-18 04:25

Sample ID 231127-xecyasbg85
Target Client-built.exe
SHA256 f50ff41e503c8b504faa61db21e97a1525c97eb97fa2e88f835ce473017b4214
Tags
office04 quasar spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f50ff41e503c8b504faa61db21e97a1525c97eb97fa2e88f835ce473017b4214

Threat Level: Known bad

The file Client-built.exe was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware stealer trojan

Quasar family

Quasar payload

Quasar RAT

Reads user/profile data of web browsers

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-27 18:45

Signatures

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-27 18:45

Reported

2023-11-27 19:16

Platform

win10-20231020-en

Max time kernel

1797s

Max time network

1810s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 vxc-63595.portmap.host udp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 254.111.26.67.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 254.43.238.8.in-addr.arpa udp
US 8.8.8.8:53 vxc-63595.portmap.host udp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
US 8.8.8.8:53 vxc-63595.portmap.host udp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
US 8.8.8.8:53 vxc-63595.portmap.host udp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
US 8.8.8.8:53 vxc-63595.portmap.host udp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp
DE 193.161.193.99:63595 vxc-63595.portmap.host tcp

Files

memory/2960-0-0x0000000000580000-0x00000000008A4000-memory.dmp

memory/2960-1-0x00007FFFD7A20000-0x00007FFFD840C000-memory.dmp

memory/2960-2-0x000000001B4B0000-0x000000001B4C0000-memory.dmp

memory/2960-3-0x000000001B4C0000-0x000000001B510000-memory.dmp

memory/2960-4-0x000000001BA50000-0x000000001BB02000-memory.dmp

memory/2960-7-0x000000001B550000-0x000000001B562000-memory.dmp

memory/2960-8-0x000000001B9D0000-0x000000001BA0E000-memory.dmp

memory/2960-9-0x00007FFFD7A20000-0x00007FFFD840C000-memory.dmp

memory/2960-10-0x000000001B4B0000-0x000000001B4C0000-memory.dmp